# Ionic 3 CORS problem(WebView?) **URL:** \ **Category:** Ionic Framework\ **Created:** [October 28, 2019, 7:05pm UTC](https://forum.ionicframework.com/t/ionic-3-cors-problem-webview/176456 "2019-10-28T19:05:45Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![prre](https://avatars.discourse-cdn.com/v4/letter/p/51bf81/32.png) [@prre](https://forum.ionicframework.com/u/prre)\ **Post date:** [October 28, 2019, 7:05pm UTC](https://forum.ionicframework.com/t/ionic-3-cors-problem-webview/176456/1 "2019-10-28T19:05:45Z")
Hi, I started making my second Ionic App and have some problems with CORS. My Settings: @ionic/cli-utils : 1.19.2 ionic (Ionic CLI) : 3.20.0 global packages: ``` cordova (Cordova CLI) : 8.0.1-nightly.2018.4.24.aeb1ddbc (cordova-lib@8.0.1-nightly.2018.4.24.fc69a0bd) ``` local packages: ``` @ionic/app-scripts : 3.2.2 Cordova Platforms : Warning: using prerelease version 8.0.1-nightly.2018.4.24.aeb1ddbc (cordova-lib@8.0.1-nightly.2018.4.24.fc69a0bd) android 8.1.0 Ionic Framework : ionic-angular 3.9.5 ``` System: ``` Node : v9.11.2 npm : 5.6.0 OS : Windows 10 ``` “dependencies”: { “@angular/animations”: “5.2.11”, “@angular/common”: “5.2.11”, “@angular/compiler”: “5.2.11”, “@angular/compiler-cli”: “5.2.11”, “@angular/core”: “5.2.11”, “@angular/forms”: “5.2.11”, “@angular/http”: “5.2.11”, “@angular/platform-browser”: “5.2.11”, “@angular/platform-browser-dynamic”: “5.2.11”, “@ionic-native/camera”: “^4.2.0”, “@ionic-native/core”: “~4.20.0”, “@ionic-native/http”: “^5.15.1”, “@ionic-native/native-storage”: “^4.5.2”, “@ionic-native/network”: “^4.11.0”, “@ionic-native/splash-screen”: “~4.20.0”, “@ionic-native/status-bar”: “~4.20.0”, “@ionic/storage”: “2.2.0”, “cordova-android”: “8.1.0”, “cordova-plugin-advanced-http”: “^1.11.0”, “cordova-plugin-camera”: “4.1.0”, “cordova-plugin-file”: “^6.0.2”, “cordova-plugin-nativestorage”: “2.3.2”, “cordova-plugin-network-information”: “2.0.2”, “ionic-angular”: “3.9.5”, “ionic-img-viewer”: “^2.9.0”, “ionicons”: “3.0.0”, “rxjs”: “5.5.11”, “sw-toolbox”: “3.6.0”, “zone.js”: “0.8.29” }, “devDependencies”: { “@ionic/app-scripts”: “3.2.2”, “cordova-plugin-device”: “^2.0.2”, “cordova-plugin-ionic-keyboard”: “^2.2.0”, “cordova-plugin-ionic-webview”: “^4.1.2”, “cordova-plugin-splashscreen”: “^5.0.2”, “cordova-plugin-statusbar”: “^2.4.2”, “cordova-plugin-whitelist”: “^1.3.3”, “typescript”: “~2.6.2” }, “description”: “An Ionic project”, “cordova”: { “plugins”: { “cordova-plugin-camera”: {}, “cordova-plugin-network-information”: {}, “cordova-plugin-nativestorage”: {}, “cordova-plugin-whitelist”: {}, “cordova-plugin-statusbar”: {}, “cordova-plugin-device”: {}, “cordova-plugin-splashscreen”: {}, “cordova-plugin-ionic-webview”: { “ANDROID\_SUPPORT\_ANNOTATIONS\_VERSION”: “27.+” }, “cordova-plugin-ionic-keyboard”: {}, “cordova-plugin-advanced-http”: {} }, “platforms”: [ “android” ] So the Problem is that I want to make some GET/POST Request to my API. The API/Server accept the POST request and put the data to my MySQL but I get no respons. On browser(ionic serve) it work how it should but If I build the app on real Device and use the Crome Developement debugger I always get this issues: Access to XMLHttpRequest at ‘[https://m.domain.de/app/api2/login](https://m.domain.de/app/api2/login)’ from origin ‘[http://192.168.2.120:8100](http://192.168.2.120:8100)’ has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. My first App make the same GET/POST request to the same Server and API and there are no Problems. Older App: “dependencies”: { “@angular/common”: “5.0.3”, “@angular/compiler”: “5.0.3”, “@angular/compiler-cli”: “5.0.3”, “@angular/core”: “5.0.3”, “@angular/forms”: “5.0.3”, “@angular/http”: “5.0.3”, “@angular/platform-browser”: “5.0.3”, “@angular/platform-browser-dynamic”: “5.0.3”, “@ionic-native/camera”: “^4.11.0”, “@ionic-native/core”: “4.4.0”, “@ionic-native/device”: “^4.5.2”, “@ionic-native/geolocation”: “^4.7.0”, “@ionic-native/native-storage”: “^4.5.2”, “@ionic-native/network”: “^4.11.0”, “@ionic-native/splash-screen”: “4.4.0”, “@ionic-native/status-bar”: “4.4.0”, “@ionic/storage”: “2.1.3”, “com.wikitude.phonegap.wikitudeplugin”: “git+https://github.com/Wikitude/wikitude-cordova-plugin.git”, “cordova-android”: “6.3.0”, “cordova-browser”: “5.0.3”, “cordova-ios”: “4.5.4”, “cordova-plugin-camera”: “^4.0.3”, “cordova-plugin-device”: “^1.1.4”, “cordova-plugin-geolocation”: “^4.0.1”, “cordova-plugin-ionic-webview”: “^1.1.16”, “cordova-plugin-nativestorage”: “^2.2.2”, “cordova-plugin-network-information”: “^2.0.1”, “cordova-plugin-splashscreen”: “^4.0.3”, “cordova-plugin-whitelist”: “^1.3.1”, “ionic-angular”: “3.9.2”, “ionic-img-viewer”: “^2.9.0”, “ionic-plugin-keyboard”: “^2.2.1”, “ionicons”: “3.0.0”, “leaflet”: “^1.3.3”, “rxjs”: “5.5.2”, “sw-toolbox”: “3.6.0”, “zone.js”: “0.8.18” }, “devDependencies”: { “@ionic/app-scripts”: “3.1.11”, “@ionic/lab”: “1.0.2”, “typescript”: “2.4.2” }, “description”: “An Ionic project”, “cordova”: { “plugins”: { “cordova-plugin-device”: {}, “ionic-plugin-keyboard”: {}, “cordova-plugin-whitelist”: {}, “cordova-plugin-splashscreen”: {}, “cordova-plugin-ionic-webview”: {}, “cordova-plugin-nativestorage”: {}, “cordova-plugin-geolocation”: {}, “cordova-plugin-network-information”: {}, “cordova-plugin-camera”: {} }, “platforms”: [ “android”, “ios”, “browser” I think the problem isn’t my API or Server, I think that my WebView not accept the respons from my server? Thanks for your help!! ---
**Author:** ![sonicwong](https://avatars.discourse-cdn.com/v4/letter/s/aeb1de/32.png) [@sonicwong](https://forum.ionicframework.com/u/sonicwong)\ **Post date:** [October 29, 2019, 2:59am UTC](https://forum.ionicframework.com/t/ionic-3-cors-problem-webview/176456/2 "2019-10-29T02:59:14Z")
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